Silicone Bung 17.5mm x 22.5mm Bored for Airlock / Blow Off Tube

Silicone Bung 17.5 x 22.5 Bored for Airlock / Blow Off Tube

This bung is made from lead free curing silicone. Suitable for all food and beverage contact.

Suited to fit your standard PET bottles if you’re a uber micro/nano brewer

Dimensions:
17.5mm tapered to 22.5mm
with a 9mm bore